Digital Rights Management is poor method of protection. The only products I purchase that use DRM invasively are video games (On the PC). Many of these allow limited numbers of installations, and the online authentication required means you essentially are renting the game and not actually owning it, because when the publisher or developer decides to call it an end of life for that game, you are out of luck. There are workarounds however, created by the very people it (DRM) is designed to stop - those who crack and distribute the game online. This brings me to the point of in the end DRM on computer games helps nobody, and much like security companies are trying to stop hackers, and virus writers, their efforts are somewhat in vein, because DRM has never stopped someone with a little bit of computer know how to put any game on the web.